Broken Singer 31K32

[torrbuidhe]

I bought a Singer 31K32 and it arrived damaged. This is the significant damage. Is it terminal?

The machine still sews for hand wheeling it.

Neil

PS,  this is the right hand end of the feed rock shaft.

Edited March 27, 2017 by torrbuidhe

[Diyer]

I hope you can claim for the damage. I presume it was dropped? I do not know your machine, but if it has a cast iron body, you need a welding company that specializes in this sort of work. I would imagine the machine would have to be completely stripped.It might be possible to peg, and drill and tap the damaged piece back on.

[torrbuidhe]

It was badly packed in a cardboard box, 2 ply card with two more layers inside, completely inadequate for a sewing machine. Welding sounds like it would be a very expensive job, it's a small piece for any type of repair and I keep thinking about the vibrations of running at even a modest 600 or 1200 spm.

It's a terrible shame, the machine is an almost mint 1929 treadle version (the bobbin winder was snapped as well). The japanning is unworn and glossy on the bed.

Neil

[Constabulary]

Too bad...

Striping and welding is too expensive I´d say. I would drill 2 or 3 small holes in the casting and the broken piece fill them with JB Weld push dowel pins JB Weld filled holes and glue it. Not much you can do beside welding or trying to glue it.

If you buy a sewing machine head and have it shipped by parcel service - always ask the seller if he can put 1.5" thick styrofoam plates on either side top and bottom of the box - pay for that extra packaging and you should be on the safe side. I know its too late but...

Edited March 27, 2017 by Constabulary

[MADMAX22]

Preheat and use the correct rod for welding. Its not overly specialized just requires some pre planning. In all honesty that's such a small area I am not sure pre heating would be that necessary.

Probably only have to remove that one bracket/rod and cover everything else. I think the harder part would be reworking the threads and or ensuring the line up and tightness of the cracked portion thru the threads.

Personally I would ground that broken foot down flat (will loose the foot support) then drill and tap two holes on the top and one on the bottom then screw the broken piece on, use some locktite and leave it be.

[CowboyBob]

You can run it the way it is,if it broke off any higher than that it would be bad.You can braze it with a torch,I would leave the bolt in there & just braze the bottom piece back on it,if you wanted to weld it with electric ,you need a nickle rod & v-grind all along the area to be welded & then pre-heat both sides or else you risk having it crack when it cools.Also clamp it while welding or brazing so it doesn't move.

[torrbuidhe]

Thanks

I think Singer used proprietary thread pitches so that would be another complication with welding. I'm 200 miles from any industrial sewing machine places so anything specialized is a non starter.

Grinding the foot flat makes sense, I hadn't thought of that. It's still a small piece to work with though. What are the stresses here anyway? There's the movement of the rock shaft and the locknut on the rock shaft screw.

It came from Berlin, the seller seems to be some sort of antiques dealer, so they should know about cast iron.

[Constabulary]

I probably have a bobbin winder for this machine but not sure... will check...

Edited March 27, 2017 by Constabulary

[Constabulary]

I think this is the one... or?

[gottaknow]

I'm with Bob. If it were mine, I'd braze it in a few spots and call it good.

Regards, Eric